Privacy is the driving force behind this project. It uses secure technologies like WebRTC to directly connect between participants. The website that provides the web app and mediates the communication.
Brie.fi/ng - Details & Top Features
The difference between Briefing and most similar projects is, that it does not use a central server that distributes the video streams (SFU). The advantage of an SFU is that it saves bandwidth due to the fact that the own video is not being uploaded to each participant but only once. The SFU can also do more optimizations the clients might not support. But then the video signal is not end-to-end.